" multifunctional building design" بسم الله الرحمن الرحيم AN-NAJAH NATIONAL UNIVERSITY ENGINEERING COLLEGE Civil Engineering Department Graduation project " multifunctional building design" Prepared By Amjad F. Sheikh Hamam F. Bsharat Hothaefa S. BaniOdeh Instructor Dr. Riad Awad

Abstract This project is a design of an multifunctional building which located in Nablus city. This building is consisted of fife stories. The building designed under a static load by SAP 2000 v.14 program

3D of the building

Contents Chapter One: Introduction - About the project - Materials   Chapter One: Introduction - About the project - Materials - loads - Codes - methodology & design   Chapter Two: Design of floor system - Slab systems - Checks - Floor system - Preliminary beam design - Thickness of the slab - Design whole beams by sap - Design of rib - Shear design of rib

Contents Chapter Three: Beams 3D Model of the building

INTRODUCTION About the project: The building located in Nablus, is a multifunctional building consists of fife floors and the foor that will be designed has an area (379m2) and height(3m). Materials : -The building is considered as reinforced concrete structure with walls all around. In this project, the structure will be analyzed and designed using software SAP2000 version 14. -Ultimate design method is used to design the building.

INTRODUCTION Materials of construction: Reinforced concrete: unit weight= 25KN/m3 fc = 28 MPa Fy =420 MPa Block density = 12 KN/m3 Stone density =20KN/m3

INTRODUCTION loads: Its gravity load consist of: Live load: it comes from the people, machines and any moveable objects in the building. The amount of live load depends on the type of building or structure. In this project the live load is (2.5kN/m2) for all floors. Dead load: Owen weight=(Calculated By SAP)

Superimposed Load: This weight per unit area depends on the type of finishing which is usually made of Tiles (3cm thick) =0.03×24 = 0.72 kN/m2 Cement mortar (2cm thick) =0.02×23 = 0.46kN/m2 Sand fill (10 cm thick) =0.1×20 = 2 kN/m2 Plaster (15cm thick) =0.015×23 = 0.345 kN/m2 Superimposed Load =4KN/m2

INTRODUCTION Code Used: American Concrete Institute Code (ACI 318-05) Combination: Ultimate load= 1.2D+1.6L

SLAB One-way slabs: When the ratio of the longer to the shorter side (L/ B) of the slab is at least or equal to 2.0, it is called one-way slab One-way ribbed slabs: If the ribs are provided in one direction only, the slab is classified as being one-way, regardless of the ratio of longer to shorter panel dimensions. -And the two way ribbed slabs :ribs distribution in both directions

One way ribbed slab+two way panel are used in this structure :

SLAB To control deflection, ACI Code specifies minimum thickness values for one-way ribbed slabs For this project thickness of slab: H min = larger of 225/8= 28 cm 235/8=29 Cm 620/21=29 cm but h not good for shear resistance and for the design of hidden beams Use h=30cm.

cross section in ribbed slab

  Shear resistance: According to ACI Code shear strength provided by rib concrete Vc may be taken 10% greater than those for beams. = 21.8KN